JP2009188838A - Optical apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep the quality of a dust removing mechanism in an optical apparatus having the dust removing mechanism for removing dust of an optical element by using a wiper, etc. <P>SOLUTION: An imaging device includes: an imaging section 10 for converting an optical image of a subject into an electrical signal; an optical member 11 disposed on the subject side of the imaging section 10; and a dust removing means 30 which is in contact with the surface of the optical member 11 to remove dust. When a battery cover 170 is opened during operation of the dust removing means 30, the dust removing means 30 is made to retract from the surface of the optical member 11. Because of this structure, even if a power supply is turned off carelessly during dust removing operation, a situation wherein a habit of bending is grown on the wiper, etc. of the dust removing means 30 can be prevented and thereby the quality of the dust removing mechanism can be maintained. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical apparatus such as a digital camera, and in particular, is attached to the surface of an optical member disposed in or near the focal plane, such as a solid-state imaging device, an optical filter, or a lens incorporated in the optical apparatus. The present invention relates to a structure for removing dust.

  Conventionally, when dust or the like is present in the vicinity of the focal plane of the photographing lens of a lens interchangeable digital single-lens reflex camera, there has been a problem that shadows of the dust or the like are reflected on the solid-state imaging device. Such dust or the like may enter from the outside when the lens is replaced, or the resin or the like, which is a structural member of the camera, may be worn with the movement of the shutter or mirror inside the camera, and fine wear powder may be generated. Is considered the cause of its occurrence.

  Conventionally, when such dust or the like has entered between a cover glass for protecting a solid-state image sensor and an optical filter such as an infrared cut filter or a low-pass filter disposed in front of the cover glass. Needed to disassemble the camera to remove it. For this reason, it has been extremely effective to provide a sealed structure so that dust and the like do not enter between the cover glass of the solid-state imaging device and the optical filter.

  However, when dust or the like adheres to the surface opposite to the opposite side of the solid-state image pickup device such as an optical filter, if the dust is in the vicinity of the focal plane, the dust is reflected in the solid-state image pickup device. The problem still remains.

  Therefore, in order to solve the above problems, a technique for cleaning the cover glass surface of the solid-state imaging device with a wiper or a flocked paper is disclosed (for example, see Patent Document 1 and Patent Document 2).

  When the camera is configured as described in Patent Document 1, dust attached to the cover glass surface of the solid-state image sensor or the outermost surface (for example, the optical filter surface) of the dust-proof structure is removed without removing the lens and without disassembling the camera. be able to.

  Further, when the camera is configured as described in Patent Document 2, dust attached to the cover glass surface of the solid-state image sensor at the time of lens replacement can be removed.

  However, if the cover glass surface of the solid-state image sensor or the outermost surface of the dust-proof structure is driven by a drive means and rubbed with a wiper or flocked paper, the wiper or flocked paper will be removed when the camera is turned off during the operation It remains in contact with the cover glass surface and the outermost surface of the dust-proof structure. In this case, if left as it is, the wiper or the flocked paper will be bent, and the wiping operation will be performed from the next time on. .

  Further, when the wiper or the flocked paper is kept in contact with the cover glass surface of the solid-state imaging device or the outermost surface of the dust-proof structure, dust accumulates at the contact portion. On the other hand, when the power supply of the camera is turned back on and the dust removing operation is resumed, a larger force is applied to the wiper and the flocked paper when the driving means such as a motor is activated than when it is normally operated. Therefore, the dust collected on the contact part of the wiper or flocked paper and the cover glass surface of the solid-state image sensor or the outermost surface of the dust-proof structure is wiped off with a greater force than in normal operation. The surface and the outermost surface of the dust-proof structure may be damaged.

  Note that Patent Document 3 and Patent Document 4 disclose measures when the power of a device having a wiper wiping mechanism is turned off.

  Patent Document 3 discloses that when the vehicle engine key is turned off, the wiper is retracted from the glass surface of the vehicle window by turning off the power to the actuator, thereby maintaining the wiper quality. Yes.

  In Patent Document 4, the presser pressure control motor and the guide surface of the guide member are used to control the presser pressure according to the vehicle side, or when the vehicle engine key is turned off, the wiper is attached to the vehicle window. It is configured to retract from the glass surface. Thus, it is disclosed that the quality of the wiper is maintained.

JP 2003-005254 A (page 8, FIGS. 1 and 2) Japanese Patent Laying-Open No. 2005-005972 (page 10, FIG. 2 and page 11, FIG. 3) Japanese Utility Model Publication No. 06-001046 (second page, FIG. 2 and FIG. 3) Japanese Utility Model Publication No. 06-027388 (first page, FIG. 1)

  However, when the technique disclosed in Patent Document 3 is applied to a camera, the wiper or the flocked paper always comes into contact with the surface to be cleaned when the power of the camera is turned on. The bug is not solved. Even if the technology disclosed in Patent Document 4 is applied to the camera, the wiper or the flocked paper always comes into contact with the surface to be cleaned when the camera is turned on. The problem of lighting is not solved.

  In view of the actual situation, the present invention maintains the quality of the dust removing mechanism in an optical device having a dust removing mechanism such as a wiper, and also enables the dust removing mechanism and the optical to be operated even when the power is turned off during the dust removing operation. An object of the present invention is to provide an optical apparatus that does not adversely affect a filter or the like.

An optical apparatus according to the present invention includes an imaging unit that converts an optical image of a subject into an electrical signal, an optical member that is disposed on the subject side of the imaging unit, and dust that contacts the surface of the optical member to remove dust. A detecting mechanism for detecting the operation of the operating means; a removing mechanism; a retracting mechanism for retracting the dust removing means in a direction of the optical axis from a state in contact with the surface of the optical member; According to the result, the dust removing means is retracted in the optical axis direction.
The optical apparatus according to the present invention includes an imaging unit that converts an optical image of a subject into an electrical signal, a dust removing unit that contacts the surface of the imaging unit and removes dust, and the dust removing unit is connected to the imaging unit. A retraction mechanism that retreats in the optical axis direction from a state in contact with the surface; and an operation detection unit that detects the operation of the operation unit. The dust removal unit is arranged in the optical axis direction according to a detection result of the operation detection unit. It is characterized by being evacuated.

  According to the present invention, the quality of the dust removing means for removing dust by contacting the surface of an optical member or the like is maintained, and even when the power is turned off during the dust removing operation, the dust removing means and the imaging means. Alternatively, it is possible to realize an optical device that does not adversely affect the optical member of the imaging means.

(First embodiment)
Hereinafter, an interchangeable-lens digital single-lens reflex camera (hereinafter abbreviated as D-SLR) that is an optical apparatus according to a first embodiment of the present invention will be described with reference to FIGS. The D-SLR has a camera body (imaging device) and a lens device that is detachably attached to the camera body.

  FIG. 1 is a diagram illustrating a schematic configuration of a camera system of a D-SLR 100 according to the present embodiment, and FIG. 2 is a front view and a cross-sectional view for explaining a schematic configuration of an imaging unit 10 of the D-SLR 100. FIG. 3 is a side sectional view for explaining a schematic configuration of the dust removing means 30 for removing dust adhering to the surface of the optical element 11 as an optical member. 4 is a block diagram showing the electrical configuration of the camera system of the D-SLR 100, FIG. 5 is a flowchart showing the operation of the dust removing means 30, and FIG. 6 is a cross-sectional view for explaining the operation of the dust removing means 30. FIG. 7 is a sub-flowchart of the flowchart shown in FIG.

  In FIG. 1, a D-SLR 100 is a single-plate digital color camera using an image sensor such as a CCD or CMOS sensor, and an image signal representing a moving image or a still image by driving the image sensor continuously or once. Get. Here, the imaging element is an area sensor of a type that converts the exposed light into an electrical signal for each pixel, accumulates charges according to the amount of received light, and reads the accumulated charges.

  In the D-SLR 100, reference numeral 101 denotes a mount mechanism for connecting a detachable lens device 102 to the D-SLR 100, and the lens device 102 is electrically and mechanically connected to the D-SLR 100 via the mount mechanism 101. Is done. Then, by attaching the lens apparatus 102 having different focal lengths to the D-SLR 100, it is possible to obtain shooting screens having various angles of view.

  In the optical axis L1 from the photographing optical system 103 provided in the lens device 102 to the solid-state imaging device 15 via the focal plane shutter 50 constituted by a plurality of shutter blades, an infrared cut filter, the optical element 11 and the like are provided. An imaging unit 10 is provided. The optical element 11 limits the cutoff frequency of the photographing optical system 103 so that a spatial frequency component higher than necessary for the object image (optical image) is not transmitted onto the solid-state imaging device 15. A plurality of layers are stacked.

  The signal read from the solid-state imaging device 15 is displayed on the display unit 107 as image data after being subjected to predetermined processing, which will be described in detail later. The display unit 107 is attached to the back surface of the D-SLR 100 so that the user can directly observe the display on the display unit 107. If the display unit 107 is composed of an organic EL spatial modulation element, a liquid crystal spatial modulation element, a spatial modulation element using fine particle electrophoresis, or the like, the power consumption can be reduced and the display unit 107 can be made thin. . Thereby, power saving and size reduction of D-SLR100 can be achieved.

  Specifically, the solid-state imaging device 15 is a CMOS process compatible sensor (hereinafter abbreviated as a CMOS sensor) which is one of the amplification type solid-state imaging devices. One of the features of the CMOS sensor is that the MOS transistors in the area sensor and the peripheral circuits such as the imaging device drive circuit, AD converter circuit, and image processing circuit can be formed in the same process. Can be greatly reduced. In addition, it has a feature that random access to an arbitrary pixel is possible, reading out for a display is easy, and display unit 107 can perform real-time display at a high display rate.

  The solid-state imaging device 15 utilizes the above-described features, and performs a display image output operation (reading in a region where a part of the light-receiving region of the solid-state imaging device 15 is thinned) and a high-definition image output operation (reading in all light-receiving regions). )I do.

  Reference numeral 111 denotes a movable half mirror that reflects part of the light flux from the photographing optical system 103 and transmits the remaining part. In the present embodiment, the half mirror 111 has a refractive index of approximately 1.5 and a thickness of 0.5 mm.

  Reference numeral 105 denotes a focusing screen disposed on a predetermined image formation plane of an object image formed by the photographing optical system 103, and 112 denotes a pentaprism.

  Reference numeral 109 denotes a finder lens for observing an object image formed on the focusing screen 105, and actually includes three lenses (109-1, 109-2, 109-3 in FIG. 1). . The focusing screen 105, the pentaprism 112, and the finder lens 109 constitute a finder optical system. Reference numeral 163 denotes an eyepiece shutter for preventing reverse incident light from the finder optical system from entering the solid-state imaging device 15 and causing a ghost during self-timer photographing.

  A movable sub mirror 122 is provided behind the half mirror 111 (on the image plane side), and reflects the light beam close to the optical axis L 1 out of the light beam transmitted through the half mirror 111 and guides it to the focus detection unit 121. The sub mirror 122 rotates around a rotation shaft provided on a holding member of the half mirror 111 (not shown) and moves in conjunction with the movement of the half mirror 111.

  Further, the optical path splitting system composed of the half mirror 111 and the sub mirror 122 can take two states. One is a first optical path split state for guiding light to the finder optical system, and the other is from the photographing optical path to directly guide the light beam from the imaging lens (not shown) to the solid-state imaging device 15. The retracted second optical path division state (positions indicated by broken lines in FIG. 1: 111 ′ and 122 ′).

  The focus detection unit 121 receives the light beam from the sub-mirror 122 and performs focus detection by the phase difference detection method. In the focus detection unit 121, reference numeral 164 denotes a condenser lens that serves as a light receiving window for the focus detection unit 121, 165 denotes a reflection mirror, 166 denotes a re-imaging lens, and 167 denotes a focus detection sensor.

  The light beam emitted from the photographing optical system 103 and reflected by the sub-mirror 122 in the first optical path division state is incident on the condenser lens 164 below the mirror box. Thereafter, the light is deflected by the reflection mirror 165, and a secondary image of the object is formed on the focus detection sensor 167 by the action of the re-imaging lens 166.

  The focus detection sensor 167 includes at least two pixel columns, and an object image formed by the photographing optical system 103 is formed on the focus detection field between the output signal waveforms of the two pixel columns. Accordingly, a relatively laterally shifted state is observed. The shift direction of the output signal waveform is reversed between the front pin and the rear pin, and the principle of focus detection is to detect this phase difference (shift amount) including the direction using a technique such as correlation calculation.

  Reference numeral 114 denotes a movable flash light emitting unit, which is movable between a storage position stored in the D-SLR 100 and a light emission position protruding from the D-SLR 100. Reference numeral 50 denotes a focal plane shutter for adjusting the amount of light incident on the image plane, and 119 denotes a main switch for starting the D-SLR 100. The main switch 119 corresponds to a configuration example of the power supply switching unit referred to in the present invention.

  Reference numeral 120 denotes a release button that is pressed in two steps. A shooting preparation operation (photometry operation, focus adjustment operation, etc.) is started by a half-press operation (SW1 ON), and a shooting operation is performed by a full-press operation (SW2 ON). Is started. The photographing operation is recording of image data read from the solid-state imaging device 15 on a recording medium.

  Reference numeral 123 denotes a mode switch for changing the D-SLR 100 from an imaging mode for imaging a subject to a cleaning mode in order to remove dust attached to the surface of the optical element 11 of the D-SLR 100. Reference numeral 180 denotes an information display unit in the optical finder for displaying specific information on the focusing screen 105.

  Reference numeral 170 denotes a battery cover for inserting / removing a small fuel cell (not shown) for supplying power to the D-SLR 100 into / from the D-SLR 100 main body, and its opening / closing operation is detected by a detection means (not shown). Yes. The small fuel cell (not shown) is configured not to be detached from the inside of the D-SLR 100 simply by opening the battery lid 170 by a locking means or the like provided inside the D-SLR 100 with the battery lid 170 opened.

  Next, the imaging unit 10 will be described with reference to FIG. In the imaging unit 10, 11 is an optical element, 12 is a holding member that holds the optical element 11, and 13 is an integrated unit of the optical element 11 and the holding member 12 in contact with the subject side surface of the optical element 11. This is a support plate 13. Reference numeral 15 denotes a solid-state imaging device, which includes a solid-state imaging device 15b and a cover member 15a for protecting the solid-state imaging device 15b.

  Reference numeral 16 denotes a seal member for sealing between the cover member 15 a of the solid-state imaging device 15 and the optical element 11. Reference numeral 17 denotes a substrate on which an electrical element constituting a control circuit that controls the operation of the D-SLR 100 is mounted, and a connection terminal 15c of the solid-state imaging device 15 is connected thereto. Reference numeral 18 denotes a holding plate that is integrated with the solid-state imaging device 15 and is fixed to the chassis of the D-SLR 100 (not shown) with screws (not shown).

  Reference numeral 30 denotes dust removing means for removing dust adhering to the surface of the optical element 11. The dust removing means 30 includes a substantially long board-shaped substrate 30-1 extending left and right, and fibers 35 (see FIG. 3) provided on the substrate 30-1 via an adhesive layer (not shown). . The dust removing means 30 can move from the position 30a shown in FIG. 2B to the position 30c through the position 30b with the fiber 35 in contact with the surface of the optical element 11. Thus, dust adhering to the surface of the optical element 11 can be wiped and removed. Since the dust removing means 30 is movable with respect to the substantially entire area of the light incident surface of the optical element 11, it is possible to remove dust attached to the substantially entire area of the light incident surface of the optical element 11.

  In the dust removing means 30, the substrate 30-1 is made of metal, the fibers 35 are at least partially conductive, and the adhesive layer is made of a conductive adhesive. And the dust removal means 30 is earth | grounded by being connected to the GND terminal provided on the housing | casing or board | substrate 17 of D-SLR100, as shown to Fig.2 (a). Therefore, it is possible to prevent the optical element 11 from being charged by the wiping operation for removing dust attached to the surface of the optical element 11. Further, the optical element 11 does not attract dust on the surface, and adhesion of dust is suppressed.

  Reference numeral 20 denotes a base plate having an opening 20a formed on its surface (subject side) on both sides of the opening 20a with a guide member (guide shaft 37) and a drive member (lead screw 38 and motor) of the dust removing means 30. 39) is arranged. That is, a guide shaft 37 extending vertically is fixed to one side of the base plate 20, and a guide portion 32 a provided at one end of the dust removing means 30 is inserted into the guide shaft 37. A lead screw 38 extending vertically is fixed to the other side, and a rack 32 b provided at the other end of the dust removing means 30 is inserted into the lead screw 38. The lead screw 38 is rotated by the rotational force of the motor 39, whereby the dust removing means 30 reciprocates and wipes off dust adhering to the surface of the optical element 11 through the opening 20a.

  A coil 21 is provided on the surface of the base plate 20 facing the holding plate 18 so as to face the permanent magnet 22 provided on the holding plate 18. In addition, shafts 24 erected on the holding plate 18 penetrate both sides of the base plate 20, and springs 25 as urging means are provided on these shafts 24. The base plate 20 is urged in the optical axis direction (FIG. 2C, arrow B direction) by a spring 25 while being guided by the shaft 24.

  In a non-energized state of the coil 21, the base plate 20 is guided by the shaft 24 and is moved in the direction of the optical axis and away from the optical element 11 by the spring 25 (the direction of arrow B in FIG. 2C). Be energized. In this state, the fiber 35 of the dust removing means 30 is not in contact with the surface of the optical element 11. That is, when the D-SLR 100 is normally photographed or stored, the dust removing means 30 does not come into contact with the surface of the optical element 11, so that there is no problem that the fibers 35 are bent.

  On the other hand, when the coil 21 is energized, the coil 21 is attracted to the permanent magnet 22 by the magnetic action of the coil 21. As a result, the base plate 20 moves against the urging force of the spring 25 in the direction of the optical axis and close to the optical element 11 (the direction opposite to the arrow B in FIG. 2C). In this state, the fiber 35 of the dust removing means 30 comes into contact with the surface of the optical element 11. That is, when the D-SLR 100 is in the cleaning mode, the dust removing unit 30 can come into contact with the surface of the optical element 11 to wipe off dust attached to the surface of the optical element 11. The configuration as described above corresponds to a configuration example of the retracting mechanism of the dust removing means in the present invention.

  As shown in FIG. 2A, the left and right opening edges 13a of the support plate 13 are disposed outside the optical effective range E of the optical element 11 (opening width is L2). Further, the upper and lower opening edges 13b of the support plate 13 are not provided on the same plane as the opening edge 13a, but are disposed on the end face side (the holding plate 18 side) of the optical element 11. As a result, the entire surface of the optical element 11 can be wiped off by the dust removing means 30.

  In addition, a suction unit (not shown) (specifically, an adhesive tape or the like) for capturing the dust removed from the surface of the optical element 11 by the dust removing means 30 is provided in the casing of the D-SLR 100.

  Next, FIG. 4 is a block diagram showing an electrical configuration of the camera system of D-SLR 100 according to the present embodiment. Here, in the following description, the same reference numerals are used for the same members as those described in FIG. Hereinafter, description will be given with reference to FIG.

  First, an explanation will be given from the part related to the imaging and recording of object images. The camera system has an imaging system, an image processing system, a recording / reproducing system, and a control system. The imaging system includes the imaging unit 10 including the imaging optical system 103 and the solid-state imaging device 15, and the image processing system includes an A / D converter 130, an RGB image processing circuit 131, and a YC processing circuit 132. The recording / reproducing system includes a recording processing circuit 133 and a reproducing processing circuit 134, and the control system includes a camera system control circuit (control unit) 135, an operation detection circuit 136, and an imaging device driving circuit 137.

  Reference numeral 138 denotes a connection terminal, which is connected to an external computer or the like and is standardized in order to transmit and receive data. The electric circuit described above is driven by receiving power from a small fuel cell (not shown).

  The imaging system is an optical processing system that forms an image of light from an object on the imaging surface of the solid-state imaging device 15 via the imaging optical system 103. The solid-state imaging device is configured to control the driving of the diaphragm 104 provided in the photographing optical system 103 and to drive the focal plane shutter 50 through the shutter control circuit 145 as necessary, thereby supplying an appropriate amount of object light. 15 can receive light.

  As the solid-state imaging device 15, an imaging element having 3700 square pixels arranged in the long-side direction and 2800 pixels in the short-side direction and having a total number of about 10 million pixels is used. In addition, R (red), G (green), and B (blue) color filters are alternately arranged in each pixel to form a so-called Bayer array in which four pixels form a set. In the Bayer array, the overall image performance is improved by arranging more G pixels that are easily felt when an observer views the image than the R and B pixels. In general, in image processing using this type of image sensor, a luminance signal is generated mainly from G, and a color signal is generated from R, G, and B.

  A signal read from the solid-state imaging device 15 is supplied to the image processing system via the A / D converter 130. Image data is generated by image processing in this image processing system. The A / D converter 130 converts, for example, an output signal of the solid-state imaging device 15 into a 10-bit digital signal according to the amplitude of the signal read from each pixel of the solid-state imaging device 15, and outputs the signal. The subsequent image processing is executed by digital processing.

  The image processing system is a signal processing circuit that obtains an image signal in a desired format from R, G, and B digital signals. The R, G, and B color signals are converted into a luminance signal Y and a color difference signal (R−Y), ( (B-Y) and the like.

  The RGB image processing circuit 131 is a signal processing circuit that processes the output signal of the A / D converter 130, and includes a white balance circuit, a gamma correction circuit, and an interpolation calculation circuit that performs high resolution by interpolation calculation. The YC processing circuit 132 is a signal processing circuit that generates a luminance signal Y and color difference signals RY and BY. The YC processing circuit 132 generates a high-frequency luminance signal generation circuit that generates a high-frequency luminance signal YH, a low-frequency luminance signal generation circuit that generates a low-frequency luminance signal YL, and color difference signals RY and BY. It has a color difference signal generation circuit. The luminance signal Y is formed by combining the high frequency luminance signal YH and the low frequency luminance signal YL.

  The recording / reproducing system is a processing system that outputs an image signal to a memory (not shown) and outputs an image signal to the display unit 107. The recording processing circuit 133 performs writing processing and reading processing of the image signal to the memory, and the reproduction processing circuit 134 reproduces the image signal read from the memory and outputs it to the display unit 107.

  The recording processing circuit 133 includes a compression / expansion circuit (not shown) that compresses the YC signal representing still image data and moving image data in a predetermined compression format and expands the compressed data. The compression / decompression circuit has a frame memory or the like for signal processing, accumulates YC signals from the image processing system for each frame in the frame memory, and stores signals accumulated from each block among a plurality of blocks. Read and compression encode. The compression encoding is performed, for example, by subjecting the image signal for each block to two-dimensional orthogonal transform, normalization, and Huffman encoding.

  The reproduction processing circuit 134 is a circuit that converts the luminance signal Y and the color difference signals RY and BY into a matrix signal, for example, an RGB signal. The signal converted by the reproduction processing circuit 134 is output to the display unit 107 and displayed (reproduced) as a visible image. The reproduction processing circuit 134 and the display unit 107 may be connected via wireless communication such as Bluetooth (registered trademark), and when configured in this way, an image captured by this camera is monitored from a remote location. be able to.

  On the other hand, the operation detection circuit 136 in the control system detects the operation of the main switch 119, the release button 120, the mode switch 123, the battery cover 170, etc. (other switches are not shown), and the detection result is controlled by the camera system. Output to the circuit 135. The operation detection circuit 136 corresponds to a configuration example of the operation detection unit in the present invention.

  The camera system control circuit 135 receives the detection signal from the operation detection circuit 136 and performs an operation according to the detection result. In addition, the camera system control circuit 135 generates a timing signal for performing the imaging operation and outputs the timing signal to the imaging device drive circuit 137.

  The imaging device driving circuit 137 receives the control signal from the camera system control circuit 135 and generates a driving signal for driving the solid-state imaging device 15. The information display circuit 142 receives a control signal from the camera system control circuit 135 and controls driving of the information display unit 180 in the optical viewfinder.

  The control system controls driving in the imaging system, image processing system, and recording / reproducing system in accordance with the operation of various switches provided in the D-SLR 100. For example, when SW2 is turned ON by operating the release button 120, the control system (camera system control circuit 135) drives the solid-state imaging device 15, operates the RGB image processing circuit 131, compresses the recording processing circuit 133, and the like. To control. Further, the control system controls the display of the information display unit 180 in the optical viewfinder via the information display circuit 142 to change the display in the optical viewfinder (display segment state).

  Next, the focus adjustment operation of the photographing optical system 103 will be described. The camera system control circuit 135 is connected to the AF control circuit 140. Further, by attaching the lens device 102 to the D-SLR 100, the camera system control circuit 135 is connected to the lens system control circuit 141 in the lens device 102 via the mount contacts 100a and 101a. The AF control circuit 140, the lens system control circuit 141, and the camera system control circuit 135 communicate with each other data necessary for specific processing.

  The focus detection unit 121 (focus detection sensor 167) outputs a detection signal in a focus detection area provided at a predetermined position in the shooting screen to the AF control circuit 140. The AF control circuit 140 generates a focus detection signal based on the output signal from the focus detection unit 121 and detects the focus adjustment state (defocus amount) of the photographing optical system 103. Then, the AF control circuit 140 converts the detected defocus amount into a drive amount of a focus lens that is a part of the photographing optical system 103, and information on the drive amount of the focus lens is passed through the camera system control circuit 135. This is transmitted to the lens system control circuit 141.

Here, when focus adjustment is performed on a moving object, the AF control circuit 140 takes into account the time lag from when the release button 120 is fully pressed until the actual imaging control is started. Predict the correct stop position. Then, information regarding the driving amount of the focus lens to the predicted stop position is transmitted to the lens system control circuit 141.
On the other hand, when the camera system control circuit 135 determines that the brightness of the object is low and sufficient focus detection accuracy cannot be obtained based on the output signal of the solid-state imaging device 15, the flash light emitting unit 114 or the D-SLR 100 is provided. A white LED or fluorescent tube (not shown) is driven to illuminate the object.

  When the lens system control circuit 141 receives information on the driving amount of the focus lens from the camera system control circuit 135, the lens system control circuit 141 controls the driving of the AF motor 147 disposed in the lens device 102. Then, the focus lens is moved in the direction of the optical axis L1 by an amount corresponding to the drive amount via a drive mechanism (not shown). As a result, the photographing optical system 103 is brought into focus. If the focus lens is composed of a liquid lens or the like, the interface shape is changed.

  When the lens system control circuit 141 receives information on the exposure value (aperture value) from the camera system control circuit 135, the lens system control circuit 141 controls the driving of the aperture drive actuator 143 in the lens device 102. Then, the diaphragm 104 is operated so as to have a diaphragm aperture diameter corresponding to the diaphragm value.

  When the shutter control circuit 145 receives information on the shutter speed from the camera system control circuit 135, the shutter control circuit 145 controls driving of the drive source 51 of the focal plane shutter 50. Then, the focal plane shutter 50 is operated so as to achieve the shutter speed. By the operation of the focal plane shutter 50 and the diaphragm 104, an appropriate amount of object light can be directed to the image plane side.

  When the AF control circuit 140 detects that the object is in focus, this information is transmitted to the camera system control circuit 135. At this time, if SW2 is turned on by a full press operation of the release button 120, the photographing operation is performed by the imaging system, the image processing system, and the recording / reproducing system as described above.

  Reference numeral 33 denotes a motor control unit that controls driving of the motor 39. Reference numeral 143 denotes a temperature / humidity detection circuit for detecting at least one temperature and humidity outside or inside the D-SLR 100, and at least one of the outside or inside of the D-SLR 100 is detected based on a detection result of a temperature / humidity detector (not shown). Detect temperature and humidity.

  Next, the operation of each member such as the dust removing means 30 in the cleaning mode will be described using the flowchart of FIG. 5 and the operation explanatory diagram of the dust removing means 30 of FIG.

  In step S100, the camera system control circuit 135 detects whether or not the mode changeover switch 123 of the D-SLR 100 is operated to be in the cleaning mode (CLN mode). At this time, when the camera system control circuit 135 detects the operation of the mode changeover switch 123 and detects that the mode is shifted to the cleaning mode, the process proceeds to step S101 (the state of FIG. 6A in FIG. 6).

  In step S101, the camera system control circuit 135 checks whether or not the battery cover 170 is open. This is to prevent a small fuel cell (not shown) from popping out from the battery lid 170 that is open during operation of the dust removing means 30 described below and stopping the power supply to the D-SLR 100. As a result, the power supply is stopped while the dust removing means 30 is wiping the surface of the optical element 11 in the cleaning mode, so that the dust removing means 30 is kept in contact with the surface of the optical element 11. In addition, bending of the fibers 35 of the dust removing means 30 is prevented. As a result, the fiber 35 is not bent, and a stable dust removal operation can be performed continuously.

  When the operation detection circuit 136 detects that the battery cover 170 is open in step S101, the process proceeds to step S150, where a warning display indicating that the battery cover 170 is open is displayed on the display unit 107, and the use of the D-SLR 100 is performed. The person is urged to close the battery lid 170. On the other hand, if the operation detection circuit 136 detects that the battery cover 170 is closed in step S101, the process proceeds to step S102.

  In step S102, the camera system control circuit 135 stores the shooting conditions such as the shutter speed and aperture value set by the D-SLR 100 before shifting to the cleaning mode in a memory unit (not shown) provided therein. Proceed to S103.

  In step S103, the camera system control circuit 135 detects at least one temperature and humidity outside or inside the D-SLR 100 by a temperature / humidity detection unit (not shown), and the process proceeds to step S104.

In step S104, the camera system control circuit 135 determines an applied voltage (referred to as a suction voltage) to the coil 21 from the temperature / humidity detection result in step S103. Thereby, the electromagnetic force when the coil 21 attracts the base plate 20 against the urging force of the urging means 25 is determined.
This is because the spring constant of the fiber 35 of the dust removing means 30 changes depending on the temperature or humidity outside or inside the D-SLR 100, so that the fiber 35 does not come into contact when cleaning the surface of the optical element 11. This is to prevent the abutment against excessive contact.

  For example, when the spring constant of the fiber 35 of the dust removing means 30 is large due to the temperature and humidity outside or inside the D-SLR 100, that is, when the fiber 35 becomes “hard”, the suction voltage applied to the coil 21 is the same as before the fiber 35 becomes hard. In this case, it becomes difficult to contact the surface of the optical element 11. Therefore, the electromagnetic force generated by the coil 21 is increased by increasing the suction voltage, so that the fiber 35 is surely brought into contact with the surface of the optical element 11. As a result, the dust removal means 30 can reliably remove the dust adhering to the surface of the optical element 11.

  Further, when the spring constant of the fiber 35 of the dust removing means 30 is small due to the temperature or humidity outside or inside the D-SLR 100, that is, when the fiber 35 becomes “soft”, the fiber 35 easily comes into contact with the surface of the optical element 11. In this case, an adhesive layer (not shown) provided on the dust removing means 30 may come into contact with the surface of the optical element 11, and if the adhesive layer comes into contact, the surface of the optical element 11 may be soiled. Therefore, by lowering the suction voltage from the voltage before the fibers 35 become soft, the amount of the fibers 35 that abut the surface of the optical element 11, that is, the amount of movement of the dust removing means 30, is adjusted. It becomes possible to prevent dirt from adhering.

  Returning to the description of the processing, in step S105, the camera system control circuit 135 applies the suction voltage determined in step S104 to the coil 21. As a result, the base plate 20 moves against the urging force of the urging means 25 in the direction of arrow C in FIG. 6B opposite to the arrow B shown in FIG. Accordingly, the fiber 35 of the dust removing means 30 comes into contact with the surface of the optical element 11 (the state shown in FIG. 6B in FIG. 6).

  In step S <b> 106, the camera system control circuit 135 starts driving the motor 39 by the motor control unit 33. As a result, the dust removing means 30 moves from the position 30a to the position 30b. That is, the dust attached to the surface of the optical element 11 is wiped away by the fibers 35 provided in the dust removing means 30.

  In step S107, which is processed almost simultaneously with step S106, the camera system control circuit 135 determines whether the movement of the dust removing means 30 from the position 30a to the position 30c via the position 30b is completed by driving the motor 39 by a predetermined amount. Detect whether or not. Specifically, the determination of the driving amount of the dust removing means 30 is to detect whether it is the driving time of the motor 39 or whether the dust removing means 30 has reached the position 30c by a position sensor (not shown). To detect a predetermined amount of drive. When the movement of the dust removing unit 30 is not completed, the process proceeds to step S160, and when the movement of the dust removing unit 30 is completed, the process proceeds to step S108.

  In step S160, the camera system control circuit 135 checks whether or not the battery cover 170 is open. This is to avoid the adverse effects caused by the user of the D-SLR 100 inadvertently opening the battery lid 170 by some means during the dust removal operation in step S106. Specifically, this is to prevent the battery lid 170 from being opened, and then a small fuel cell (not shown) from jumping out of the D-SLR 100 to stop power supply to the D-SLR 100. On the other hand, if the battery cover 170 is not opened in step S160, the process returns to step S106 and the dust removal operation is continued. Although details will be described later, when it is detected in step S160 that the battery cover 170 is open, the process proceeds to a “recovery” subroutine.

  In step S108, the camera system control circuit 135 stops driving the motor 39 and proceeds to step S109.

  In step S <b> 109, the camera system control circuit 135 counts for a predetermined time with a timer unit (not shown) provided therein. At this time, the dust removed from the surface of the optical element 11 falls from the surface of the optical element 11 by gravity and is captured by a suction unit (not shown). Therefore, the dust removed from the surface of the optical element 11 does not drift in the body of the D-SLR 100, so that there is no possibility of reattaching to the surface of the optical element 11.

  After counting for a predetermined time in step S109, in step S110, the camera system control circuit 135 drives the motor 39 in the direction opposite to that in step S106 by the motor control unit 33. Thereby, the dust removing means 30 returns from the position 30c to the position 30a via the position 30b.

  Next, in step S111, the camera system control circuit 135 detects whether or not the movement of the dust removing means 30 from the position 30c to the position 30a via the position 30b is completed by driving the motor 39 by a predetermined amount. . As described above, the driving amount is determined by the driving time of the motor 39 or by detecting whether the dust removing means 30 has reached the position 30a by a position sensor (not shown). Drive amount is detected. When the movement of the dust removing unit 30 is not completed, the process proceeds to step S170, and when it is confirmed that the dust removing unit 30 has moved to the position 30a, the process proceeds to step S112.

  In step S170, the camera system control circuit 135 confirms whether the battery cover 170 is open as in step S160. This is to avoid the adverse effects caused by the user of the D-SLR 100 opening the battery cover 170 inadvertently or with some margin during the movement of the dust removing means 30 to the position 30a in step S111. Specifically, this is for taking measures when the battery lid 170 is opened and then a small fuel cell (not shown) jumps out of the D-SLR 100 and power supply to the D-SLR 100 is stopped. . On the other hand, if the battery cover 170 is not opened in step S170, the process returns to step S110 to continue the movement operation of the dust removing means 30. When it is detected in step S170 that the battery cover 170 is open, the process proceeds to a “restoration” subroutine which will be described in detail later.

  Next, in step S112, the camera system control circuit 135 stops driving the motor 39 by the motor control unit 33, and proceeds to step S113.

  In step S113, the camera system control circuit 135 turns off the application of the attraction voltage to the coil 21. Thereby, the fiber 35 of the dust removal means 30 cancels | releases the contact state with the surface of the optical element 11 (it returns to the state of Fig.6 (a)).

  In step S114, the camera system control circuit 135 cancels the cleaning mode after waiting for the driving of the motor 39 in step S112 and the application of the suction voltage to the coil 21 in step S113 to be stopped. At the same time, a message indicating that the cleaning mode has been canceled (or the cleaning operation has been completed) is displayed on the display unit 107 in step S115. In step S116, the camera system control circuit 135 returns the D-SLR 100 to the shooting conditions and the like stored in step S102, and ends a series of sequences.

  Here, the subroutine “recovery” described above will be described in detail with reference to FIG.

  In step S <b> 161, the camera system control circuit 135 causes the motor control unit 33 to stop driving the motor 39. This is to avoid the adverse effects after a small fuel cell (not shown) pops out from the battery lid 170 that is open during the movement of the dust removing means 30 and the power supply to the D-SLR 100 is stopped. Specifically, this is because the restoration operation described below is performed in a state where the fibers 35 of the dust removing means 30 are released from contact with the surface of the optical element 11. In addition, during the recovery operation described below, a large force is applied to the dust removing means 30 when the driving of the motor 39 is resumed, and the surface of the optical element 11 is scratched within the optical effective range of the optical element 11. This is to prevent it. By doing so, the following recovery operation is performed outside the optical effective range on the surface of the optical element 11, so that the optical effective range on the surface of the optical element 11 is not damaged. Details will be described below.

  In step S162, the camera system control circuit 135 turns off the application of the attractive voltage to the coil 21, and proceeds to step S162. Thereby, the fiber 35 of the dust removal means 30 cancels | releases the contact state with the surface of the optical element 11 (it returns to the state of Fig.6 (a)). Therefore, the state in which the fibers 35 of the dust removing means 30 are in contact with the surface of the optical element 11 is continued, and the fibers 35 of the dust removing means 30 are prevented from being bent. That is, no bending habit is attached to the fiber 35, and a stable dust removal operation can be performed continuously.

  Next, in step S <b> 163, the camera system control circuit 135 confirms whether or not the battery lid 170 has been closed by the user of the D-SLR 100 by the operation detection circuit 136. When the operation detection circuit 136 detects that the battery cover 170 is closed, the process proceeds to step S164, and when it is not possible to detect that the battery cover 170 is closed, the process proceeds to step S180. In step S180, the camera system control circuit 135 displays a warning display indicating that the battery cover 170 is open on the display unit 107, and prompts the user of the D-SLR 100 to close the battery cover 170 in step S163. Return to.

  In step S164, the camera system control circuit 135 checks the rotation direction of the motor 39 before proceeding to this subroutine “recovery”. If the rotation direction of the motor 39 is the normal rotation direction, that is, if the subroutine "recovery" has been proceeded according to the detection result in step S160, the process proceeds to step S165. If the rotation direction of the motor 39 is the reverse rotation direction, that is, if the subroutine “recovery” has proceeded according to the detection result in step S170, the process proceeds to step S171.

  In step S165, the camera system control circuit 135 drives the motor 39 in the direction opposite to that in step S106. Thereby, the dust removal means 30 returns to the position 30a which is an initial position.

  Next, in step S166, the camera system control circuit 135 detects whether the motor 39 has been driven by a predetermined amount and the dust removing means 30 has completed the movement to the position 30a. Specifically, a predetermined amount of drive is detected by detecting whether it is the drive time of the motor 39 or whether the dust removing means 30 has reached the position 30a by a position sensor (not shown). To do. When it is confirmed that the dust removing means 30 has moved to the position 30a, the process proceeds to step S167.

  In step S167, the camera system control circuit 135 stops driving the motor 39. In other words, the dust removing means 30 is in the position 30a, and the fibers 35 of the dust removing means 30 are released from contact with the surface of the optical element 11.

  Next, in step S168, the camera system control circuit 135 applies a voltage to the coil 21 with the suction voltage determined in step S104. Thereby, the fibers 35 of the dust removing means 30 come into contact with the surface of the optical element 11. When the operation in step S168 is completed, the process returns to step S106, and the camera system control circuit 135 resumes the operation of removing dust attached to the surface of the optical element 11. Thereby, even if the battery cover 170 is opened during the dust removing operation, the dust removing operation can be performed again from the initial position 30a.

  On the other hand, the case where the rotation direction of the motor 39 is the reverse rotation direction in step S164, that is, the process proceeds to this subroutine “recovery” based on the detection result in step S170 will be described below.

  In step S171, the camera system control circuit 135 drives the motor 39 in the direction opposite to that in step S110. Thereby, the dust removing means 30 returns to the position 30c where the dust removing operation is completed.

  In step S172, the camera system control circuit 135 detects whether or not the motor 39 has been driven by a predetermined amount and the dust removing unit 30 has completed the movement to the position 30c. Specifically, a predetermined amount of drive is detected by detecting whether it is the drive time of the motor 39 or whether or not the dust removing means 30 has reached the position 30c by a position sensor (not shown). To do. When it is confirmed that the dust removing means 30 has moved to the position 30c, the process proceeds to step S173.

  In step S173, the camera system control circuit 135 stops driving the motor 39. That is, the dust removing means 30 is in a state in which the fiber 35 is released from contact with the surface of the optical element 11 at the position 30c.

  Next, in step S174, the camera system control circuit 135 applies a voltage to the coil 21 with the suction voltage determined in step S104. Thereby, the fiber 35 of the dust removing means 30 comes into contact with the surface of the optical element 11. When the operation in step S174 is completed, the process returns to step S110, and the return operation of the dust removing means 30 to the initial position 30a is resumed. Thereby, even if the battery cover 170 is opened during the returning operation of the dust removing means 30 to the initial position, the returning operation can be performed again from the dust removing operation completion position 30c.

  In the above configuration, the dust removing means 30 does not come into contact with the optical element 11 unless the dust removing operation is being performed, and the optical element may be turned off even during the dust removing operation. 11 is released. Thereby, the dust removal means 30 can avoid the situation where a bending habit is attached to the fiber 35 by the contact state with the optical element 11 continuing. That is, according to the above configuration, the quality of the dust removing unit 30 is maintained, and even if the power is turned off for some reason during the dust removing operation, the dust removing unit 30 and the optical element 11 are adversely affected. It is possible to realize an optical apparatus that does not affect the range.

In the above embodiment, the fiber of the dust removing unit 30 is returned when the dust removing unit 30 is returned from the position 30c to the initial position 30a after the dust removing unit 30 completes the operation of removing the dust attached to the surface of the optical element 11. 35 and the surface of the optical element 11 were kept in contact with each other. However, the present invention is not limited to this configuration.
For example, the application of the suction voltage to the coil 21 is stopped immediately before step S110 of the flow shown in FIG. 5 to release the contact state between the fiber 35 of the dust removing means 30 and the surface of the optical element 11, and then You may perform the movement operation which returns the dust removal means 30 to the initial position 30a. It goes without saying that the effect as described in the first embodiment can be obtained even in such an aspect.

  In the above embodiment, the case where the battery cover 170 is opened is described. However, the present invention is not limited to this. For example, the battery cover 170 is configured to operate according to the detection result of the operation of the main switch 119. May be. Specifically, when the main switch 119 is operated while the dust removing unit 30 is moving in the cleaning mode and the power of the D-SLR 100 is turned off, the application of the suction voltage to the coil 21 is also turned off. As a result, as described in the first embodiment, the fiber 35 of the dust removing unit 30 releases the contact state with the surface of the optical element 11. Then, if the restoration subflow shown in FIG. 7 is executed immediately after the D-SLR 100 is turned on by operating the main switch 119 of the D-SLR 100, as described in the first embodiment. Needless to say, it is possible to obtain an effect equivalent to the effective effect.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the drawings used in the following description, components having the same functions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 8 is a cross-sectional view for explaining a schematic configuration of the imaging unit 10 of the D-SLR 100 according to the present embodiment. FIG. 8A shows a state when no attracting voltage is applied to the coil 21, and FIG. 8B shows a state when an attracting voltage is applied to the coil 21.

  In FIG. 8, 61 is an opening lock member provided separately from the opening / closing operation member of the battery lid 170 (not shown). The opening lock member 61 includes a guide hole 61a slidable on a guide shaft 62 provided in a housing (not shown) of the D-SLR 100, and a convex portion 61b that comes into contact with a drive pin 63b provided in a lock lever 63 described later. And the claw part 61c engaged with the engaging claw 170a of the battery cover 170 is provided.

  The opening lock member 61 is moved in the direction of arrow E in the figure by an urging means 65 such as a tension spring (one end is fixed to the opening lock member 61 and the other end is fixed to a housing (not shown) of the D-SLR 100). It is energized. Thereby, the convex part 61b of the open lock member 61 and the drive pin 63b of the lock lever 63 are always in contact with each other.

  The lock lever 63 is rotatably held about a rotation shaft 64 provided in a housing (not shown) of the D-SLR 100, and is urged by a biasing means (not shown) in the direction of arrow D in FIG. Is being energized. The rotation of the lock lever 63 is restricted by a stopper pin 67 provided in a housing (not shown) of the D-SLR 100. Further, the urging force of the lock lever 63 is set larger than the urging force of the urging means 65. In FIG. 8A, that is, in a normal state, the lock lever 63 is brought into contact with the stopper pin 67. It is held in the state.

  Further, the lock lever 63 is integrally provided with a pin 63 a that comes into contact with the convex portion 20 b provided on the base plate 20 and a drive pin 63 b that comes into contact with the convex portion 61 b of the above-described opening lock member 61.

  In the configuration as described above, when a suction voltage is applied to the coil 21 in order to remove dust adhering to the surface of the optical element 11 from the state of FIG. 8A, the base plate 20 is the same as in the first embodiment. Next, it moves in the direction of arrow C shown in FIG.

  Then, along with the movement of the base plate 20, the convex portion 20b provided on the base plate 20 resists the urging force of the lock lever 63 and moves the lock lever 63 in the direction opposite to the arrow D in FIG. Rotate to By the rotation operation of the lock lever 63, the opening lock member 61 moves in the direction of arrow E in FIG. 8A by the urging force of the urging means 65 while the guide hole 61a is guided by the guide shaft 62. As a result, the claw portion 61c of the opening lock member 61 is engaged with the engagement claw 170a of the battery lid 170, so that the battery lid 170 cannot be opened (that is, locked). By providing such a locking mechanism, there is no possibility that the battery cover 170 will be opened during the dust removing operation of the dust adhered to the surface of the optical element 11 by the dust removing means 30. Thus, as in the first embodiment. In addition, it is possible to reliably prevent problems caused by opening the battery cover 170.

  On the other hand, when the operation of removing dust attached to the surface of the optical element 11 by the dust removing means 30 is completed and the application of the suction voltage to the coil 21 is turned off, as described in the first embodiment, the base The plate 20 is moved in the direction of arrow B in FIG. 2C by the urging force of the urging means 25. As the base plate 20 moves, the lock lever 63 rotates in the direction of arrow D in FIG. 8A by the urging force of the urging means (not shown). Therefore, the opening lock member 61 moves in the direction opposite to the arrow E direction in FIG. 8A while being guided by the guide shaft 62 through the guide hole 61a against the urging force of the urging means 65. As a result, the claw portion 61c of the opening lock member 61 is disengaged from the engagement claw 170a of the battery lid 170. Therefore, after the cleaning mode is finished, the battery lid 170 is removed when the user of the D-SLR 100 intends. Will be able to open.

  According to the above configuration, it is possible to realize an optical device that can remove dust attached to the surface of the optical element 11 without damaging the surface, and to maintain the quality of the dust removing mechanism. That is, since the opening operation of the battery cover 170 is prevented during the dust removal operation, it is possible to realize an optical device that prevents the battery cover 170 from opening and adversely affecting the dust removing means 30, the optical element 11, and the like. .

  In the first and second embodiments described above, the method for removing dust attached to the surface of the optical element 11 has been described. However, the present invention is not limited to this, and the present invention has a different configuration. It can also be applied. For example, in the case of a digital color camera in which the focal plane shutter 50 and the cover glass 15a of the solid-state image pickup device 15 are close to each other (see FIG. 9), the focal plane shutter 50 and the solid-state image pickup device 15 are interposed between them. A dust removing means 30 is provided. As a result, similarly to the embodiment described above, dust attached to the surface of the cover glass 15a of the solid-state imaging device 15 can be removed without damaging the surface. Further, the quality of the dust removing means 30 is maintained, and even if the power is turned off for some reason during the dust removing operation, the dust removing means 30 and the surface of the cover glass 15a of the solid-state imaging device 15 are not adversely affected. An optical device can be realized.

  In the first and second embodiments described above, the contact / separation operation of the dust removing means 30 from the surface of the optical element 11 is performed on the coil 21 using the biasing means 25, the coil 21, and the permanent magnet 22. However, other modes may also be used. For example, a shape memory alloy may be used, or a PZT actuator or a plunger may be used.

  In order to realize the present invention, a storage medium in which a program code (program) of software that realizes the functions of the above-described embodiments may be used. In this case, the object of the present invention is achieved by supplying the storage medium to the system or apparatus, and the computer (or CPU or MPU) of the system or apparatus reads and executes the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code itself and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Needless to say, the OS (basic system or operating system) running on the computer performs part or all of the actual processing based on the instruction of the program code.

  Furthermore, the program code read from the storage medium may be written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. In this case, based on the instruction of the written program code, the CPU or the like provided in the function expansion board or function expansion unit may perform part or all of the actual processing.

It is a figure which shows schematic structure of the camera system of the digital color camera which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating schematic structure of the imaging part of the digital color camera which concerns on the 1st Embodiment of this invention. It is a figure explaining the structure of the principal part of the dust removal means which removes dust in the digital color camera which concerns on the 1st Embodiment of this invention. 1 is a block diagram showing an electrical configuration of a digital color camera according to a first embodiment of the present invention. It is a flowchart explaining operation | movement of the dust removal means which removes dust in the digital color camera which concerns on the 1st Embodiment of this invention. It is a figure explaining operation | movement of the dust removal means which removes dust in the digital color camera which concerns on the 1st Embodiment of this invention. It is a flowchart explaining operation | movement of the dust removal means which removes dust in the digital color camera which concerns on the 1st Embodiment of this invention. It is a figure explaining the structure of the dust removal means which removes dust in the digital color camera which concerns on the 2nd Embodiment of this invention. It is a figure explaining the structural example at the time of implementing this invention in another digital color camera.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image pick-up part 11 Optical element 15 Solid-state imaging device 18 Holding plate 20 Base plate 21 Coil 30 Dust removal means 30-1 Substrate 35 Fiber 100 Lens interchangeable digital single-lens reflex camera (D-SLR)
119 Main switch 170 Battery cover

Claims (7)

Imaging means for converting an optical image of a subject into an electrical signal;
An optical member disposed on the subject side of the imaging means;
Dust removing means for removing dust by contacting the surface of the optical member;
A retracting mechanism for retracting the dust removing means in a direction of the optical axis from a state in contact with the surface of the optical member;
An operation detection means for detecting the operation of the operation means,
An optical apparatus characterized in that the dust removing means is retracted in the optical axis direction in accordance with a detection result of the operation detecting means.   2. The optical apparatus according to claim 1, wherein the dust removing means is brought into contact with the surface of the optical member only during the dust removing operation. Imaging means for converting an optical image of a subject into an electrical signal;
Dust removing means for contacting the surface of the imaging means to remove dust;
A retracting mechanism for retracting the dust removing means in a direction of the optical axis from a state in contact with the surface of the imaging means;
An operation detection means for detecting the operation of the operation means,
An optical apparatus characterized in that the dust removing means is retracted in the optical axis direction in accordance with a detection result of the operation detecting means.   4. The optical apparatus according to claim 3, wherein the dust removing means is brought into contact with the surface of the imaging means only during the dust removing operation.   The optical apparatus according to claim 1, wherein the operation unit is a battery lid.   The optical apparatus according to claim 1, wherein the operation unit is a power supply switching unit. A temperature / humidity detection means for detecting at least one of temperature and humidity;
The optical apparatus according to claim 1, wherein an amount of movement of the dust removing unit in the optical axis direction is adjusted according to a detection result of the temperature / humidity detecting unit.

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